I’m on second round of letrozole n 28 cd. Dnt know exactly about ovulation but perhaps it was day 13 so it seems to be 16 dpo .last round I got my periods on 39 th day with bfn n this time bfn again till today.having period like cramps for 3 days but the different thing is sore boobs this time I usually dnt have before periods but it might be due to medicine. I also have slight pcos.what could be the chance? Any insight from wise ladies plz?